http://www.durgan.org/ShortURL/?BQJFO 20 August 2008 Kennebec Potatoes. Kennebec Potatoes harvested today. The tuber has some angular features, and I will not be growing this type next year. My opinion is Superior and Chieftain are better choices. There is no significant difference between chitted and NOT chitted. I will chit next year without removing the main eye cluster, which I did in 2007. Total weight was 23 kg from 13 plants for an average weight per plant of 1769g about 4.4 lbs per plant. http://www.durgan.org/ShortURL/?DLIZU 2008 Potato Growing experience.